Sharp SF-2020 Service Manual page 74

11. ADU
<Reverse roller>
1
Remove the extension stopper, and remove the ADU from the
copier.
Remove the four fixing screws (M4 × 8) of the ADU cover, and
2
remove the ADU cover.
Remove the six fixing screws (M4 × 10 = 4 pcs., M4 xc 8 = 1 pc.)
3
of the transport frame lower unit, and remove the unit from the
ADU unit.
At that time, slightly lift the transport frame lower unit to disconnect
the paper entry/exit sensor connector.
4
Remove the E-ring of the reverse roller, and remove the pressure
spring.
5
Remove the reverse shaft fulcrum lever ass'y and slide the
reverse roller shaft in the arrow direction to remove.
6
Remove the reverse roller.
<Paper feed roller>
(Perform the same procedures for the take-up roller.)
1
Remove the extension stopper, and remove the ADU unit from the
copier.
2
Put the ADU unit up side down. (The lower side facing up.)
3
Remove two plastic E-rings.
4
Slide the bearing in the arrow direction (inward).
5
Remove the paper feed roller shaft from the ADU unit.
6
Remove the plastic E-ring, and pull out the paper feed roller in the
arrow direction.
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